/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicMeshChangeTracker.h
End the change transaction and get the resulting change object
[TUniquePtr](API\Runtime\Core\Templates\TUniquePtr)< [FDynamicMeshAttributeChangeSet](API\Runtime\GeometryCore\DynamicMesh\FDynamicMeshAttributeChangeSet) > EndChange()